Mark,

A test of the long algorithm is to see if the output from the short wep
with key SSSSSIII ss identical to to the output from the long wep with
key SSSSSIIISSSSSIII. S is the 40-bit secret, and I is the 24-bit IV.
The problem could be that the 128-bit wep is actually 128-bits of
secret plus 24-bits of IV. I know Lucent uses 104-bit secrets.

Gary

*********** REPLY SEPARATOR ***********

On 04/20/2001 at 11:38 AM Mark S. Mathews wrote:

>I have no idea how to fix this. The extension of nwepgen to 128 bits
was
>contributed by a user. This is the first confirmation I've received
that
>it doesn't work.
>
>-M
>
>
>On Fri, 20 Apr 2001, Leonard Ye wrote:
>
>> Hi all,
>>
>> If I am not wrong, WEP algorithm is platform independent. Thus, the
same
>> generation string should generate the same set of keys for both
windows OS
>> and Linux OS. However, the test I have done shows that the same set
of
>> keys are generated at 64 bits, but not at 128 bits. Here is the
detail.
>>
>> Generation String: test
>>
>> WEP program on linux: nwepgen on 0.1.8pre11. Its document says that
it
>> uses algorithm from Neesus Datacom Inc.
>>
>> WEP program on Windows: An application provided by Neesus Datacom
Inc.
>>
>> At bit 64, both of them generate the same set of keys.
>>
>> At bit 128,
>>
>> linux generates:
>> 1b:9d:da:48:3d:94:1e:41:48:d0:91:b3:cd
>> f0:63:e3:8d:00:86:c9:31:55:05:13:3b:b7
>> 97:6d:3d:c6:74:00:48:96:67:38:a8:9d:24
>> cb:ce:cf:dd:f7:8e:07:10:0b:8b:a9:a3:28
>>
>> windows generates:
>> Key 1: 9f:df:3b:fd:fb:10:af:eb:09:25:ef:96:05
>> (the application only generates 1 key at 128-bit)
>>
>> Any hints here?
>>
>> Regards,
>> Leonard Ye
>>
>> -----------------------------------------------
>> The Linux WLAN User's Mailing List
>> For more information about this list see:
>> http://www.absoval.com/linux-wlan/lists.html
>>
>
>--
>
>Mark S. Mathews
>
>AbsoluteValue Systems Web: http://www.linux-wlan.com
>P.O. Box 410670 e-mail: marklinux-wlan.com
>Melbourne, FL 32941-0670 Phone: 321.259.0737
>USA Fax: 321.259.0286
>
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 ================================================
 Gary Spiess (Gary.SpiessIntermec.com)
 Wireless Products Group, Intermec Technology Corp
 voice: 319 369-3580 fax: 319 369-3804

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